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GCN Circulars

GCN Circulars are rapid bulletins submitted by and distributed to the community. See the documentation for help with subscribing to or submitting Circulars.

Search for Circulars by submitter, subject, or body text (e.g. 'Fermi GRB').
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
Advanced Search

To narrow the search results, use advanced search syntax. This allows for specifying which circular field to search (submitter, subject, and/or body). For additional information, refer to the advanced search documentation.

Advanced Search Examples (click to copy):

subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

11 results found.

  1. GRB 060929: Further XRT Refined Analysis
  2. GRB 060929: Swift/UVOT Optical Observations
  3. GRB060929: Swift-XRT refined analysis.
  4. GRB 060929, Swift-BAT further refined analysis - late-time flare
  5. GRB 060929: TNG K-band observations
  6. GRB 060929, Swift-BAT refined analysis
  7. GRB 060929: BART observation
  8. GRB 060929: MASTER-VWF-Kislovodsk observations
  9. GRB 060929: BOOTES-IR & OSN observations
  10. Liverpool Telescope observations of GRB 060929
  11. GRB 060929: Swift detection of a burst

Advanced

Download all Circulars as a .tar.gz archive (updated once a day):
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